Four capacitors are connected as shown in the equivalent capacitance between the points P and Q is

|
(a) 4 μF |
(b) |
(c) |
(d) |
Four capacitors are connected as shown in the equivalent capacitance between the points P and Q is

|
(a) 4 μF |
(b) |
(c) |
(d) |
(d)
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The diameter of each plate of an air capacitor is 4 cm. To make the capacity of this plate capacitor equal to that of 20 cm diameter sphere, the distance between the plates will be
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(a) 4 |
(b) 1 |
(c) 1 cm |
(d) 1 |
Two electric bulbs A and B are rated as 60 W and 100 W. They are connected in parallel to the same source. Then,
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(a) Both draw the same current |
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(b) A draws more current than B |
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(c) B draws more current than A |
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(d) Current drawn are in the ratio of their resistances |
A light wave is incident normally over a slit of width 24 . The angular position of second dark fringe from the central maxima is 30o. What is the wavelength of light
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(a) 6000 Å |
(b) 5000 Å |
(c) 3000 Å |
(d) 1500 Å |
In the Bohr model of the hydrogen atom, let R, v and E represent the radius of the orbit, the speed of electron and the total energy of the electron respectively. Which of the following quantity is proportional to the quantum number n
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(a) R/E |
(b) E/v |
(c) RE |
(d) vR |
$\text{zero}$
$\frac{1}{8}\omega\text{Bl}^2$
$\frac{1}{2}\omega\text{Bl}^2$
$\text{B}\omega\text{l}^2$
The two bulbs as in the above question are connected in series to a 200 volt line. Then
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(a) The potential drop across the two bulbs is the same |
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(b) The potential drop across the 40 watt bulb is greater than the potential drop across the 100 watt bulb |
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(c) The potential drop across the 100 W bulb is greater than the potential drop across the 40 W bulb |
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(d) The potential drop across both the bulb is 200 volt |